Can we add points to already running campaign?

Hi There,
I wanted to assign the points to the users who are opening the emails of an already ongoing campaign.

The campaign has 35 emails in it which triggers one after another and is live currently, now we want to assign points to the users who are opening all the emails.

As per my knowledge, if we are making any changes to the already published campaign, it might cause some issues in the campaign.

Is there any way to assign points without disturbing the ongoing campaign?